Subtract 75/30 from 12/18
1st number: 12/18, 2nd number: 2 15/30
12/18 - 75/30 is -11/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
12/18 = 12 × 5/18 × 5 = 60/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
75/30 = 75 × 3/30 × 3 = 225/90 - Subtract the two like fractions:
60/90 - 225/90 = 60 - 225/90 = -165/90 - After reducing the fraction, the answer is -11/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/18-75/30 12/36-75/30 12/18-75/60 36/18-75/30 12/54-75/30 12/18-75/90 60/18-75/30 12/90-75/30 84/18-75/30